Journal of Applied Polymer Science最新文献_第4页

Preparation of Phosphate-Modified Melamine Formaldehyde Resin and Its Application for Flame-Retardant Cellulose Paper 磷酸盐改性三聚氰胺甲醛树脂的制备及其在阻燃纤维素纸上的应用

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-08-27 DOI: 10.1002/app.71444

Hong Chan Lee, Shichoon Lee

{"title":"Preparation of Phosphate-Modified Melamine Formaldehyde Resin and Its Application for Flame-Retardant Cellulose Paper","authors":"Hong Chan Lee, Shichoon Lee","doi":"10.1002/app.71444","DOIUrl":"https://doi.org/10.1002/app.71444","url":null,"abstract":"<div>\u0000 \u0000 <p>There is a need to improve the flame retardancy of melamine formaldehyde (MF) resins used in construction materials and industrial applications. In this study, modified MF resin was obtained using eco-friendly methods and reagents; specifically, ultrasonic treatment was performed in an aqueous solution containing disodium hydrogen phosphate (DSP) and phosphoric acid. Fourier transform infrared, X-ray photoelectron spectroscopy, and nuclear magnetic resonance spectroscopy confirmed that the phosphate-modified MF resin (PMF) was produced by the treatment. Elemental analyses showed that the condensation reaction occurred at the hydroxymethyl group and amine groups of MF resin to form methylene bridges, and the reaction rate and elemental composition of PMF powder were changed depending on the ratio of MF/DSP reaction medium. PMF can be in situ coated on the cellulose paper with pad-sonication-cure treatment. Scanning electron microscope confirmed the presence of numerous micro-sized PMF particles coated on the paper surface. Thermogravimetric analysis revealed that the PMF-treated paper increased the production of residues and charred materials. Differential scanning calorimetry revealed that the PMF-treated paper exhibited heat absorption characteristics. Vertical burning tests on paper treated with PMF powder demonstrated that it was nonflammable and had a limiting oxygen index (LOI) of 32, sufficient to prevent further combustion.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC 延缓塑化PVC老化的清漆评价

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-02 DOI: 10.1002/app.71450

Mathilde Larrieu, Nathalie Balcar, Gilles Barabant, Maroussia Duranton, Odile Fichet, Sophie Cantin

{"title":"Evaluation of Varnishes to Slow Down the Aging of Plasticized PVC","authors":"Mathilde Larrieu, Nathalie Balcar, Gilles Barabant, Maroussia Duranton, Odile Fichet, Sophie Cantin","doi":"10.1002/app.71450","DOIUrl":"https://doi.org/10.1002/app.71450","url":null,"abstract":"<p>This study investigates the preventive and curative potential of surface varnishes to mitigate the aging of plasticized PVC (p-PVC), with particular emphasis on the influence of the PVC formulation on coating efficiency. Two industrial p-PVC formulations were studied: PVC-nP plasticized with Diisodecyl Phthalate and Epoxidized Soybean Oil, and PVC-wP containing an additional phosphate plasticizer, each in pigmented and unpigmented versions. Three aqueous polyurethane-based varnishes, vPU, vVA, and vFC were applied, and the samples were subjected to artificial aging under cyclic temperature and humidity conditions. Color changes associated with dehydrochlorination and plasticizer migration were monitored. The results demonstrate that the effectiveness of barrier coatings is strongly formulation-dependent. Phosphate-containing PVC-wP exhibited faster mass loss due to the early migration of the phosphate plasticizer, limiting the protective effect of the investigated coatings, whereas the vPU varnish markedly improved the stability of PVC-nP by reducing both color variation and plasticizer loss. Moreover, coating efficiency depended not only on the PVC formulation but also on the degradation state of the material at the time of application, with earlier application providing greater protection.</p>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71450","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Perspective on Self-Destructing Microfluidics: On-Demand, Safe, and Environmentally Friendly 自毁微流体：按需、安全、环保

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-08 DOI: 10.1002/app.71475

Yiqiang Fan, Siyuan Ding, Xueqin Chen, Kexin Gao

{"title":"A Perspective on Self-Destructing Microfluidics: On-Demand, Safe, and Environmentally Friendly","authors":"Yiqiang Fan, Siyuan Ding, Xueqin Chen, Kexin Gao","doi":"10.1002/app.71475","DOIUrl":"https://doi.org/10.1002/app.71475","url":null,"abstract":"<div>\u0000 \u0000 <p>Microfluidic devices have been widely commercialized in recent years, especially in the field of in vitro diagnostics (IVD), these microfluidic devices are sometimes also referred to as “cartridges.” Used microfluidic devices contain sensitive personal information (e.g., genetic information), as well as the intellectual property (IP) of the microfluidic device manufacturer. For IVD application scenarios like home testing, field & resource-limited area testing, the used cartridges may not get proper medical waste treatment. To avoid personal information leakage or the counterfeit/reuse of the microfluidic device, the microfluidic devices need to be property destructed after use. Although very limited discussions have been published on the destruction (disposal) of microfluidic devices, the self-destructing methods of microfluidics can be adopted from integrated circuit (IC) or micro-electromechanical systems (MEMS) fields. This perspective discusses various possible approaches to self-destructing microfluidics, where devices are designed to self-destruct after use, enabling the safe disposal of the processed fluid sample, the destruction of the device structure, or both. We believe this study could provide some useful insight for future studies on self-destructing microfluidics in the context of the wide application of microfluidics in IVD and other fields.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Mechanism Analysis of Hyperbranched Polymer Shale Inhibitor With Multiple Adsorption Sites 多吸附位超支化聚合物页岩抑制剂的制备及机理分析

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-01 DOI: 10.1002/app.71455

Junhao Fan, Jinsheng Sun, Zongwu Lu, Yiheng Huang, Guiqing Xu, Ting Liao, Fubo Ma, Jian Li

{"title":"Preparation and Mechanism Analysis of Hyperbranched Polymer Shale Inhibitor With Multiple Adsorption Sites","authors":"Junhao Fan, Jinsheng Sun, Zongwu Lu, Yiheng Huang, Guiqing Xu, Ting Liao, Fubo Ma, Jian Li","doi":"10.1002/app.71455","DOIUrl":"https://doi.org/10.1002/app.71455","url":null,"abstract":"<div>\u0000 \u0000 <p>Polymer shale inhibitor is an indispensable additive for high-performance water-based drilling fluid due to its excellent high temperature resistance and high inhibition. However, in the high temperature environment of deep and ultra deep wells, conventional linear polymer shale inhibitors have poor rheological properties and limited adsorption sites, leading to shale hydration and expansion, wellbore instability and drilling safety accidents. Therefore, this paper innovatively prepared multi adsorption site hyperbranched superpolymer shale inhibitor (HPN-ADNL). At the same time, the same functional monomer was used to synthesize linear polymer shale inhibitor (ADNL) for comparative evaluation. It is found that HPN-ADNL has a highly branched three-dimensional network structure, and the initial degradation temperature can reach 246°C. Under the condition of adding 1 wt% HPN-ADNL, the linear expansion rate of bentonite pellets decreased from 77.34% to 27.76%, and the rolling recovery rate of shale at 180°C increased from 25.72% to 82.16%. Hyperbranched polymer HPN-ADNL has better inhibition performance than linear polymer ADNL. The unique hyperbranched structure of HPN-ADNL makes it have more adsorption sites, interact more closely with shale, and show excellent inhibition. The development and mechanism analysis of HPN-ADNL provide technical support for the efficient and safe drilling of deep and ultra deep wells.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Water Decontamination: A Modified Gum Tragacanth-Gelatin Hydrogel for Efficient Removal of Polycyclic Aromatic Hydrocarbons 可持续水净化：一种用于高效去除多环芳烃的改性胶-明胶水凝胶

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-03 DOI: 10.1002/app.71445

Showkat Rashid, Umar Nabi Tak, Gousia Ahanger, Saima Sidiq, Arjumand Shaheen, Ayaz Ahmad Manhas, Aijaz Ahmad Dar

{"title":"Sustainable Water Decontamination: A Modified Gum Tragacanth-Gelatin Hydrogel for Efficient Removal of Polycyclic Aromatic Hydrocarbons","authors":"Showkat Rashid, Umar Nabi Tak, Gousia Ahanger, Saima Sidiq, Arjumand Shaheen, Ayaz Ahmad Manhas, Aijaz Ahmad Dar","doi":"10.1002/app.71445","DOIUrl":"https://doi.org/10.1002/app.71445","url":null,"abstract":"<div>\u0000 \u0000 <p>This study reports the development of a biodegradable hydrogel, synthesized from gelatin and dialdehyde gum tragacanth (Gel/DGT), for the effective removal of polycyclic aromatic hydrocarbons (PAHs) from contaminated water. The hydrogel was prepared by crosslinking dialdehyde gum tragacanth (DGT), obtained via periodate oxidation of gum tragacanth, with gelatin through covalent Schiff-base linkages (–C═N–). The resulting Gel/DGT hydrogel exhibited robust mechanical strength, high swelling capacity (400% at pH 7 and 25°C), and significant biodegradability (94.67% within 30 days). Its rough surface morphology, high surface area, and abundant functional groups facilitated efficient adsorption of PAHs, achieving removal efficiencies of 97.5% for phenanthrene (Phen), 70.0% for acenaphthene (Ace), and 58.0% for naphthalene (Nap). Adsorption data best conformed to the Freundlich isotherm model (<i>R</i>\u0000 <sup>2</sup> > 0.98), with a maximum adsorption capacity of 500 mg/g for Phen. These findings demonstrate the Gel/DGT hydrogel as a sustainable, high-capacity adsorbent for mitigating persistent organic pollutants in aqueous systems, offering advantages over conventional remediation methods.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Morphology and Wettability Characteristics of Waste Pine Wood Powder Reinforced Epoxy Composites 废松木粉增强环氧复合材料的表面形貌及润湿性

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-08-28 DOI: 10.1002/app.71449

Ahmet Cihat Ari

{"title":"Surface Morphology and Wettability Characteristics of Waste Pine Wood Powder Reinforced Epoxy Composites","authors":"Ahmet Cihat Ari","doi":"10.1002/app.71449","DOIUrl":"https://doi.org/10.1002/app.71449","url":null,"abstract":"<div>\u0000 \u0000 <p>In this study, wood-based composites were prepared from waste pine and epoxy resin for use in water resistant applications. Wood-based composites are produced using waste pine powder in varying weight percentages (10–50 wt.%) within epoxy resin. The study determined that adding waste pine to composites increased compression strength by 103.96% to 582.02% compared to pure resin. However, it was determined that when the percentage of waste pine exceeded 20%, the compression strength of the samples decreased by 24.76%–70.09% compared to the compression strength value of the composite with 20% waste pine added. Furthermore, while the contact angle value of pure resin was 81.33°, the contact angle of wood-based composite samples was shown to be in the range of 83.88°–103.70°. The contact angles of the composites with 40% and 50% waste pine added were 98.49° and 103.70°, respectively. Composites having these contact angles (angles > 90°) also exhibited higher water resistance as their surfaces were not easily wetted by water. In summary, through the synthesis of these composites employing epoxy resin and waste pine powder in varying proportions, they exhibit considerable viability for application in water repellant applications in high humidity surroundings owing to their mechanical and hydrophobic characteristics.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailored Bio-Based Sodium Alginate/Polyacrylamide Hydrogels With Enhanced Adhesive and Load Bearing Ability 定制生物基海藻酸钠/聚丙烯酰胺水凝胶具有增强的粘接和承载能力

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-01 DOI: 10.1002/app.71452

Muhammad Tahir Khan, Arooba Shehzad, Nadia Naeem, Shazia, Mohib Ullah, Luqman Ali Shah, Hyeongmin Yoo

{"title":"Tailored Bio-Based Sodium Alginate/Polyacrylamide Hydrogels With Enhanced Adhesive and Load Bearing Ability","authors":"Muhammad Tahir Khan, Arooba Shehzad, Nadia Naeem,  Shazia, Mohib Ullah, Luqman Ali Shah, Hyeongmin Yoo","doi":"10.1002/app.71452","DOIUrl":"https://doi.org/10.1002/app.71452","url":null,"abstract":"<div>\u0000 \u0000 <p>This study focuses on the synthesis of a bio-based, viscoelastic hydrogel derived from sodium alginate with enhanced adhesive properties suitable for diverse applications. The hydrogel network was formed through free radical polymerization, employing N, N′-methylene bisacrylamide (MBA) as a crosslinking agent to establish a chemically crosslinked matrix. Comprehensive characterization using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and simultaneous thermal analysis (STA) confirmed the successful synthesis, morphological features, and thermal stability of the hydrogels. The adhesive performance was systematically evaluated through rheological testing, measuring both adhesive strength and viscoelastic parameters such as storage (<i>G</i>′) and loss (<i>G</i>″) moduli under varying frequencies and strain conditions. The findings demonstrate that intermolecular interactions within the polymeric network critically influence adhesive efficacy. By modulating sodium alginate concentrations (0.1, 0.2, and 0.3 g), optimal adhesive properties were attained at 0.2 g. Adhesion tests conducted on multiple solid substrates including glass, steel, wood, and textiles revealed superior adherence particularly on metal, wood, and glass surfaces. These results underscore the potential utility of the synthesized hydrogel as a versatile adhesive material for biomedical and industrial applications.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Encapsulation of Sucralose Into Cyclodextrin Metal–Organic Frameworks: Preparation, Structure Characterization, and Evaluation of Thermal Stability 三氯蔗糖包封环糊精金属有机骨架：制备、结构表征及热稳定性评价

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-07 Epub Date: 2026-09-08 DOI: 10.1002/app.71446

Zhichao Chen, Qianqian Pang, Zheng Hu, Hongbiao Li, Dezhi Yang, Jitao Li, Yaling Yang, Zeyi Dong

{"title":"Encapsulation of Sucralose Into Cyclodextrin Metal–Organic Frameworks: Preparation, Structure Characterization, and Evaluation of Thermal Stability","authors":"Zhichao Chen, Qianqian Pang, Zheng Hu, Hongbiao Li, Dezhi Yang, Jitao Li, Yaling Yang, Zeyi Dong","doi":"10.1002/app.71446","DOIUrl":"https://doi.org/10.1002/app.71446","url":null,"abstract":"<div>\u0000 \u0000 <p>Electronic cigarettes (e-cigarettes) have acquired more popularity in recent years, mainly because they are supposed to be less harmful than regular cigarettes. The thermal stability of sucralose (Suc) as sweetener in e-cigarettes is important. This study aimed to synthesize sucrose loaded cyclodextrin-metal–organic frameworks (CD-MOFs) from potassium hydroxide, crystallized with β-cyclodextrin (β-CD) and γ-CD, and their complex thermal stability properties were further evaluated. The basic β-CD MOFs reaches high sucrose payloads of 92.54 wt%, corresponding to a molar ratio of 8:1 between sucrose and β-CD. Thermal stability analysis indicates a substantial improvement, with the Suc-β-CD-MOF complexes displaying an onset decomposition temperature of 197°C, representing a 125°C increase relative to that of free sucrose. In comparison to Suc-β-CD-MOF, sucrose coated with β-CD-MOF maintained 73.4% at 80°C for 12 h, with the release rate reduced by about 26.6%. These findings demonstrate the potential of β-CD-MOF as effective carriers for sucrose thermal stability enhancement.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 43","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Performance CNT-Reinforced Ion-Exchange Resins for the Hydration of Ethylene Oxide 用于环氧乙烷水化的高性能碳纳米管增强离子交换树脂

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-09-04 DOI: 10.1002/app.71374

Fengping Yu, Junwei Ge, Ming Jin, Jiahua Wang, Yi Wang, Yuanxin Wang, Wenjun He

{"title":"High-Performance CNT-Reinforced Ion-Exchange Resins for the Hydration of Ethylene Oxide","authors":"Fengping Yu, Junwei Ge, Ming Jin, Jiahua Wang, Yi Wang, Yuanxin Wang, Wenjun He","doi":"10.1002/app.71374","DOIUrl":"https://doi.org/10.1002/app.71374","url":null,"abstract":"<div>\u0000 \u0000 <p>The catalytic hydration of ethylene oxide (EO) to monoethylene glycol (MEG) is an industrially important process, but conventional ion-exchange resin (IER) catalysts suffer from limited thermal stability and undesirable swelling. In this study, multiwalled carbon nanotubes (CNTs) are incorporated into a pyrrolidinium-functionalized styrene-divinylbenzene resin via in situ suspension polymerization to address these challenges. Comprehensive characterization confirms the effective CNT dispersion and strong interactions with the polymer matrix. The resulting CNT-reinforced IER exhibits improved thermal stability, enhanced anti-swelling capacity, and a notably lower exchange capacity loss compared with conventional IERs. In a fixed-bed reactor for EO hydration, the bicarbonate-form of CNT-reinforced IER catalyst achieves over 97% EO conversion and 98% MEG selectivity under optimized conditions (90°C, 2.25 h<sup>−1</sup> and a water-to-EO molar ratio of 11.20) and maintains stable performance over 2500 h. These results demonstrate that CNT reinforcement, combined with the pyrrolidinium functionality, provides a durable and highly selective catalyst for industrial EO hydration.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149099638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning Free Volume via Diamine Structure in 6FDA-Based Polyimide Membranes for He/Ne Separation 通过二胺结构调节6fda基聚酰亚胺膜的自由体积用于He/Ne分离

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-10-01 Epub Date: 2026-09-07 DOI: 10.1002/app.71292

Jiayou Liao, Yi Sun, Ruojia Lin, Chengyun Gao, Zhichao Zhai, Xianjie Meng, Jiwei Ma, Duo Jia, Yuxuan Li, Xingzhong Cao, Xu Wu

{"title":"Tuning Free Volume via Diamine Structure in 6FDA-Based Polyimide Membranes for He/Ne Separation","authors":"Jiayou Liao, Yi Sun, Ruojia Lin, Chengyun Gao, Zhichao Zhai, Xianjie Meng, Jiwei Ma, Duo Jia, Yuxuan Li, Xingzhong Cao, Xu Wu","doi":"10.1002/app.71292","DOIUrl":"https://doi.org/10.1002/app.71292","url":null,"abstract":"<div>\u0000 \u0000 <p>Helium and neon are strategically important noble gases in semiconductor manufacturing and cryogenic technologies, yet their similar molecular sizes and inertness make separation challenging. Although membrane-based separation offers an energy-efficient alternative to cryogenic processes, polymer membranes and theoretical designs for He/Ne separation remain limited. In this study, the free volume of polyimides based on 6FDA was tailored by incorporating different diamine structures, and the resulting effects on He/Ne separation performance were systematically investigated. Two classes of diamines were selected: monoaromatic diamines affecting chain symmetry and stacking, and diaromatic bridged diamines introducing varying degrees of chain rigidity. Structure-dependent differences in chain packing and free volume were analyzed using PALS and MD simulations. A quantitative correlation between free volume parameters and gas transport properties established a clear structure–property relationship. Among the studied membranes, 6FDA-ODA polyimide membrane prepared from 6FDA and ODA exhibited a favorable permeability–selectivity balance with helium permeability of 134.78 barrer and an ideal He/Ne selectivity of 6.18. The membrane maintained stable permeation at 200 psi and exhibited increased selectivity after physical aging. These results demonstrate that tuning diamine structures effectively regulates chain packing and free volume, enabling the development of high performance 6FDA-based polyimide membranes for He/Ne separation.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 42","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149100343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0